Drill



S. C. SALMON.

DRILL.

APPLICATION FILED JULY 12, 191B.

Patented Feb. 10, 1920.

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SAMUEL o. sALMon, or MANH TT N, KA vsAs.

DRILL.

To all whom it may concern.-

Be it known that I, SAMUEL C. SALMON, a citizen of the United States, residing at Manhattan, in the county of Riley and State of Kansas, have invented a certain new and useful Improvement in Drills, of which the following is a specification. K

My invention relates to improvements in drills. It relates particularly to grain drills of the type provided with disks arranged inpairs adapted to "make deep furrows in whi. h the seeds are planted, the furrows being separated by prominent ridges.

One of the objects of my invention is the provision of a'drill of the kind described which will be of light draft and which will eliminate excessive lateral swinging of the gangsof disks. j

Another object of my invention is the provision of novel and efficient means for vertically adjusting the disks.

Still another object of my invention is the provision of novel means by which the drill is adapted to be adjusted to different positions to accommodate it to draft horses of I different height.

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawings, which illustrate the preferred embodiment of my invention,

Figure 1 is a view partly in vertical section and partly broken away, of my improved drill.

Fig. 2 is a top view of one of the draw bars and disks carried thereby.

Fig. 3 is a side view of the one of the draw bars shown partly broken away, and some of the parts connected therewith.

Fig. 4: is a plan view, partly broken away,

of my improved drill.

Fig. 5 is a rear view of two of the disks, shown in operative position in the soil, and a part of one of the seed dropping tubes.

1 designates a horizontal frame pivoted on a horizontal axis on an axle cavo-convex disks 5 nd 6 of the usual type. 1

The disks of each pair are faced in opposite directions and are disposed in substantial longitudinal alinement, one in advance of with the forward disk in all operative positions higher than the rear disk.

-terminate of 2 on which are mounted the usual carrying wheels 3.

Specification of Letters Patent. 1 P t t d Feb- 1(), 192 Application filed July 12, 1918. Serial No. 244,520. i l

f For supporting the front disk 5 of each pair 1 arovide a vertical late 7 havin a pair of vertical slots 8 through which extend two bolts 9 respectively, which extend through the adjacent draw bar 4 and which are provlded with nuts 10. A stud 11- fass tened to the plate 7 serves as a support for the rotary disk 5. j

The rotary disk 6 is mounted on a stud 12, which is supported on a vertical plate 13, which is provided with two vertical slots the furrows, each tubelS has attached to it.

the forward'end of a chain 20, Fig. 1, arranged to drag along in the furrow.

The seed tubes 18- are verse seed box 21 of the usual type.

For swinging the draw bars 4: on the frame 1, each draw-bar has pivoted to it inthe disks 5 and 6, the lower end of a bar 22, the upper end of which is provided with a longitudinal slot 23 through which extends a pin rigidly to atransverse horizontal rock shaft to the frame 1 and lever 28, which is adapted to be locked to an arcuate plate 29, having peripheral teeth 30 adapted to be engaged in the usual manner by a sliding bolt 31 mounted on the lever 28 and connected by alink 32 with a bell crank lever 33 which is p voted'on the lever 28 and which has connected to it a link 34, which is pivotally connected to. a bell crank lever 35 pivoted on the lever 28 adjacent to the handle at the upper'end thereof.

It coil spring 36 encircles each, bar 22 and has its lower endbearing against the adjacent draw bar 4, and has its upper end connected at their upperends 1n the usual manner to a trans 24, Fig. 1,v carried'at. one end of a crank arm-25 which is secured and rearwa'rdly extending arm 17 Fig. 3,

ering the seed which hasbeen. deposited in parts In Fi l of the drawin s there are shown two sets of draw bars, three in each set, the connecting bars 22 of one set being pivoted respectively to three crank arms 25 of a rock shaft 26 having secured to it an open ating' lever 28-. A similar rock shaft 26 having three crank arms 25 is disposed in longitudinal alinement with the other rock shaft. The last named three crank arms 25 are pivoted respectively to three bars which are respectively pivoted to the draw bars l of the other set. The front disks of the right hand set have their concav sides .facing to the right, and the front disks 5 of the other set have their concave sides facing to the left. The rear disk of each pair faces with its concave side in a direction opposite to the front disk of the pair. By this arrangement the lateral pressureis equalized.

Prefe ably the draw bar are spaced apart so that the furrows made by the disks 5 and 6 will be the same distances apart.

Each of the rock shafts 26 is provided with an operating lever 28 having the means already described for being releasah...y locked "to a peripherally notched plate-29.

It is sometimes desirable to vertically adjust the frame 1 bv swinging it on its axis, for the purpose or lowering'the front disks 5, or raising them, without correspon gly moving rear disks in a likedirection to the same extent. This may be accomplished in different ways. shown a means for vertically swinging the frame 1 comprising the following described 36 designates a forwardly extending tongue connected by a horizontal trans verse bolt 37 with two links 38 which are pivoted by a horizontal transverse. bolt 39 mounted in the arms of a- U shaped bracket 40, which is secured to the top and forward part of the frame 1. Secured to the rear end of the tongue 36 is a plate l1 having an arcuate notched upper edge adapted to be releasably engaged by a sliding bolt 42,

which is mounted on a-lever 43, which is pivoted by a horizontal transverse bolt 4% to the plate 41. The bolt 42 has pivoted to it a link 45 which is pivoted to a bell crank hand lever 46, which is pivoted to the lever 43. The lower end of the lever 43 is provided with an arm 47, whichv is pivoted to a link 48, which is pivoted by a transverse horizontal pin l9 to a bearing -50, which 18 fastened to a transverse bar 51 i I i of the-frame 1;

In the drawings, 1 have By swinging the upper end of the lever rearwardly, the arm 47 and the link 48 will straighten out, thus lifting the rear end of the tongue 36, and, through the interinediacy of the links 38, bolts 37 and 39 and bracket 4-0, lifting the forward end of I the frame 1, thereby lifting the forward ends of the draw bars 4. The front disks 5 will thus be lifted to a greater extent than the rear disks 6. Upon swinging the lever foiwvardl the arm 47 and link 48 will i 7 draw the rear end of the tongue 36 down wardly, thus swinging downwardly the forward end of the frame 1 and the forward ends of the draw bars l, downwardly the front disks 5.

ti ereby carrying 0 By swinging the levers 28, the rear ends of the draw bars a may be moved vertically,

thereby moving the rear disks 6 vertically to a greater extent than the disks 5.

' From the foregoing it will be understood hat by properly operating the levers 28 and t3, the front and rear disks may be adjusted -elai'zively to any desired positions within the limits of their movements.

As the front disks 5 are,'inthe operative positions below the surface of the ground, always higher than the rear disks, and as the disks of each pair are in substantial longitudinal alineinent witheach oth r, the rear disks will, by cutting fresh earth at a depth lower than that reached by the front disks, do the work, or substantiallf the same work as the front disks which prelim'inarily break the ground, it desirable, however, to be able to vary the depth that the front disks shall enter the ground with out sul'istantially ch" travel of the rear disks. This may be accomplished, by operating the lovers 28 and .5

in the manner already described.

By having the tongue connected to'the frame pivotally and with the lever 43 and link 48, the height of th'e forward end of the tongue can be varied to suit the height of the horses hitched thereto, without changing the depth'of travel of the disks 5 and 6. v I

Thus by holding the front of the frame 1 at the desired height, with the disks set,

desired, the front end of the tongue 36 can be lowered, for attachment to a smaller team' of horses, by swinging the lever 43 rearwardly at its upper end. 'Or the front end of the tongue may be hfted, for attachment to a team of greater height, by swinging the upper end of the lever 4-3 forwardly.

As shown in the drawing, the front and rear disks of each pair are disposed reversely to each other but with their cutting edges at substantially the same angle to the line of draft. I V I x This arrangement of the disks together with the disposition of the front disks higher than the. rear disks, in the operative the depth of 1 positions, makes the draft light. and equalizes the lateral pressure. By having the front disks adjustable vertically to a greater extent, if desired, than the rear disks, the 'drill is adapted for varylng conditions of the ground and character of the soil, and for different kinds of seeds, which may require different manipulation of, the soil.

With my improved drill, the seed is planted at the bottom of a furrow. The prominent ridges between the furrows af-' ford ample protection to the seed in many ways. They insure an abundance of moisture, whether due to snow or rain, being retained at the bottom of the furrows; and, where the, soil is light and the winds high, the dirt is not blownofi from the seeds. With the seeds so planted, they are not injuriously affected by the action of frost in the ground.

I do not limit my invention to the structure shown and described, as modifications,

within the scope of the appended claims,

may be made Without departing fromthe spirit of my invention.

hat I clalm 1s:

1. In a drill, a pair of oppositely facing concavo-convex disks, and'vertically adjustable means for supporting the disks in substantial longitudinal alinement one in ad- Vance of the other with the front disk in all operative positions higher than the rear disk, the disks being arranged to throw the dirt at opposite sides of a furrow made by them.

2. In a drill, a pair of oppositely facing concavo-convex disks, means for supporting the disks in substantial longitudinal alinement one in advance of the other with the front disk in all operative positions higher than the rear disk, the disks being arranged to throw the dirt at opposite sides of a furrow made by them, and means for adjusting the supporting means so that the disks will tent 'thanthe other.

3. In a drill, a pairof oppositely facing concavo-convex disks, means for. supporting the disks in substantial longitudinal alinement one in advance of the other with the front disk in all operative positions higherthan the rear disk, the disks being arranged to throw the dirt at opposite sides of a furrow made by them, and means for adjusting the supporting means so'that the disks will bevertically' adjustedthe front disk to a greater extent than the rear disk. y

4. In a drill, a pair-of, oppositely facing concavo-convex disks, means for supporting the disks in substantial longitudinal alinement one in advance of the other with the front disk in all operative positions higher than the rear disk, the disks being arranged to throw the dirt at opposite sides of a furrow made by them, and means for adjusting the supporting means so that the disks will be vertically adjusted and providing for the adjustment of either disk to a greater extent than the other.

5. In a drill, two pairs of concavo-convex disks, the disks of each pair being oppositely facing and arranged to throw the dirt at opposite sides of a furrow made by them,

means for supporting each pair of disks with the disks of each pair disposed in substantial longitudinal alinement, one in advance of the other with the front disk in all operative positions being higher than the rear disk, means for adjusting the supporting means so thatthe disks of each pair will be ad usted vertically, one to a greater extent than the other, the two pairs of disks being spaced apart so as to leave respectively two furrows. v V

In testimony whereof I have signed my name to this specification.

SAMUEL o. SALMON. 

